re: Looking for a specialty plane

Here is one that fits on a grinder. I’m not sure if this is what you are after but this site has many types.
http://www.woodcraft.com/Product/149989/Holey-Galahad-See-Through-Disc-Round-Coarse-Blue-78-Arbor.aspx
Or if you are looking for a plane solution thy here.
http://www.leevalley.com/en/Wood/page.aspx?p=55065&cat=1,41182
http://www.leevalley.com/en/Wood/page.aspx?p=57205&cat=1,41182